AUBURN, N.Y. -- An inmate at the Auburn Correctional Facility allegedly punched an officer in the face, temporarily knocking him unconscious, and fracturing the left side of his jaw, according to the New York State Correctional Officers and Police Benevolent Association.

The alleged assault took place at about 9:32 a.m. June 9, the union said.

Two officers were escorting a 28-year-old inmate, whose name is not being released, from his cell to an office at the prison. During the escort, the inmate allegedly refused directions from the officers. A supervisor arrived on the scene and gave the inmate specific orders, which he refused to comply with, the union said.

This is what the union said happened during the incident:

One of the escort officers attempted to apply restraints on the inmate. The inmate drove his shoulder into the officer's chest to drive him back. The two officers grabbed the inmate in body holds and forced him to the ground. The inmate struggled violently and tried to break free.

A third officer arrived on the scene and applied pepper spray to the inmate's face and head. The application had no affect and he continued to struggle with the officers. The officers were able to get the inmate's wrists behind his back and into restraints.

Once in restraints, the inmate was escorted to the infirmary to be assessed and decontaminated from the pepper spray.

In the infirmary the restraints were taken off. With his restraints off, the inmate became violent again. He punched one officer in the left side of the face, knocking him to the ground unconscious. Several officers attempted to get the inmate under control as he fought violently with them. At one point during the struggle, he attempted to kick the unconscious officer who was lying on the floor.

It took several officers to get the inmate under control and into wrist and leg restraints. Once in restraints, he became compliant, the union says.

The inmate was assessed at an outside hospital and transferred to Southport Correctional Facility. He is serving a 2 to 4 year sentence after being convicted of second-degree attempted assault and third-degree attempted criminal possession of a controlled substance in Schenectady County in 2015.

The officer who was punched in the face regained consciousness a few seconds after the attack. He was transferred to Auburn Community Hospital and treated for a fracture to the left side of his jaw, loosened teeth and back pain.

He has not returned to duty, the union said.

Six officers reported minor injuries during the attack and remained on duty.